Method and apparatus for making plastic containers having decreased gas permeability
US4667620A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1985 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Oct 29, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C14/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Apparatus for producing open ended plastic containers having decreased gas permeability that includes a vacuum chamber and a pump for regulating the pressure therein, an ionization source mounted in the chamber proximate the container's open end and a container holder located in the chamber. The container holder has a hole aligned with the open end and may include a shield that encompasses the exterior of the container and may include a magnet setting up a magnetic field on the exterior of the shield. In the method, a container is placed on the container holder in the chamber with the open end and hole aligned and with the shield and magnet located as described above. The coating material is vaporized and ionized so that the ionized material is deposited on the interior wall of the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.